RESTORATION OF RCC STRUCTURES OF TG DECK OF UNIT - 7 AT CPP

Amount

Scaffolding :Providing and fixing double scaffolding system (Cup lock type)on the exterior side of up to seven storied height made with 40mm diameter M.S.tubes 1.5m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S.tubes challies, M.S. clamps and M.S. Staircase system in the scaffolding for working platform etc and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever require for completion of work at required locations with essential safety features for the workmen etc complete as per the directions and approval of Engineer-In-charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective duration of scaffolding.

Chipping :Chipping : 25mm average thickness Chipping of unsound/weak concrete material of 25mm average thickness from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts, all complete as per specifications and direction of Manager-In-Charge.

Nozzle Fixing : Providing and inserting 12mm dia GI NRV Nozzle in honeycomb area and along crack line including drilling of holes of required diameter up to depth 100mm at required spacing and making the hole & crack dust free by blowing compressed air, sealing the distance between injection nipple with adhesive chemical of approved make and allow it to cure complete as per direction of Engineer-In-Charge.

Injecting Epoxy Grout : Injection Low viscosity Epoxy Grouting:- Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/masonry by suitable gun/ pump at required pressure including cutting of nipples after curing etc. all complete as per specifications and direction of Manager-In-Charge. (The payment shall be made on the basis of actual weight of approved epoxy grout injected). Epoxy injection grout in concrete/RCC work of approved make. Special Product: Master Inject 1315 of Master Builders or Equivalent.

Epoxy Bond Coat :Bond Coat : Providing, mixing and applying Epoxy bonding coat of approved make on chipped portion of RCC as per manufacturer's specifications and direction of Manager-In-charge. Special Product : Masterbrace 1414 of Master Builders or Equivalent.

Polymer Plaster 12mm thick : Chemically modified Polymer Plaster: 12 mm average thickness.Providing, mixing and applying SBR polymer (of approved make) modified Cement mortar in proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 2% by wt. of cement used) as per specifications and directions of Manager-in-charge. Cement will be issued by NALCO at free of cost at Nalco Store. Special Product : Master Emaco SBR 2 of Master Builders or equivalent.

Anti-carbonation Coating :Anti-carbonation Coating: Providing and Finishing with Anti-carbonation Epoxy paint (two or more coats) on concrete work at all locations prepared and applied as per manufacturer's specifications including appropriate priming coat, preparation of surface, complete as per specification and direction of Manager-in-charge Special Product : Master Seal 300H of Master Builders or equivalent.

Fire retardant paint : Providing and applying two coats of fire retardant paint including preparation of base surface as per recommendations of manufacturer to make the surface fire retardant, complete as per specification and direction of Manager-in-charge. Special Product : Ameetuf/Shalimar or Equivalent.

Gubbi Civil Engineers

VARSHITHA CONCRETE TECHNOLOGIES PRIVATE LIMITED